Frank c



(No Model.)

I. G. SOPBR.

BASEMENT LIGHT.

Patented July 13,1897.

jli ar/ Lag UNITED STATES PATENT OFFICE.

FRANK C. SOPER,

BASEM ENT-LIG HT.

SPECIFICATION forming part of Letters Patent No. 586,252, dated July 13,1897.

Application filed April 20, 1897. Serial No. 632,969. (No model.)

To (tZZ whom it may concern:

Be it known that I, FRANK C. SOPER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois,

have invented certain new and useful I111- provem cuts inBasement-Lights, of which the following is a specification.

My invention relates to a device for lighting basements and the like,and has for its IO object to provide a new and improved device for thispurpose, of which the following is a description.

My invention is illustrated in the accompanying drawings, wherein I5Figure 1 is a view of a basement, showing one form of my device. Fig. 2shows a modiiication.

Like letters refer to like parts throughout both figures.

A is the basement or room to be lighted; B, the vault beneath thepavement, which is composed of the tile-sections C and D, faced inopposite directions and adapted, both of them, to throw the light uponthe prism-plate 2 5 E, which is preferably composed of a series ofpris1n-lights united by electroglazing.

F F are prisms which throw the light in some other direction. Of coursethe size, form, )roportion, and arrangement of the sev- 0 eral parts maybe greatly varied without departing from the spirit of myinvention. The

. angles of the prisms in the tiles and also of the prisms in the plateswill be varied, and the angle of inclination of the plate may be 5varied to suit varying conditions. The device is applicable to theillumination of rooms, whether basements or otherwise. The tiles aremade up into a so-called pavement, though of course this pavement isnothing 0 more than a pavement-like construct-ion projectingsubstantially horizontally from the building.

I have illustrated my device as applicable to basements, but it isevident that it will be 4.5 applicable to other situations whereilluminating eifects are to be produced.

I claim- 1. A device for lighting basements and the like comprising aseries of prism-tiles arranged in oppositely-facing sections, incombination with a transparent prism-plate, depending beneath andbetween such sections.

2. A device for lighting basements and the like comprising a series ofprism-tiles arranged in sections, oppositely faced, in combination witha prism-plate having a comparatively smooth surface on one side with aprismsurface on the other side, the several prisms set at an angle sothat the light will be thrown from the one section of the prism-tilesupon the prism-surface of the plate and be thence reflected into thedirection desired, while light from the other section of tiles will bethrown upon the smooth surface of the plate and will be transmittedtherethrough and be refracted thereby so as to be directed into the roomto be illuminated.

3. A device for lighting basements comprising two sets or sections ofprism-tiles, a re ceiving prism-plate intermediate between said two setsor sections and suspended in a substantially vertical plane, saidprism-plate so formed as to refract the light received from one set ofprism-tiles and direct it into the basement and reflect the light fromthe other set of tiles and also direct it into the basement.

i. A device for lighting basements and the like, comprising atransparent pavementlike body projecting substantially horizontally fromthe building and provided with two sets of prism-tiles adapted to throwthe light in opposite directions, a substantially verticallyarrangedtransparent prism -plate, so suspended between the two sections thatlight 8 from one section of tiles passes through the prism-plate and isrefracted into substantially horizontal lines, while the light from theother section of tiles is reflected from the prism-plate intosubstantially horizontal 0 lines.

FRANK C. SOPER.

WVitnesses:

DONALD M. CARTER, BERTHA C. Snvrs.

